用于 UIPickerView 的 Xamarin ValueMember？

Question

当为 windows 表单应用程序使用组合框时，您可以有一个 DisplayMember（显示的内容）和一个 ValueMember（用户看不到但代码使用的值对于其他进程）

我想知道 Xamarin 中的 UIPickerViews 是否有类似的功能

Answer 1

if there is a similar sort of function for UIPickerViews in Xamarin?

是的！你可以在 UIPickerView.

中实现它

string[] DisplayMembers = new string[] { "January", "February", "March",...,"December" };
int[] ValueMembers = new int[] {1,2,3,...,12 };

而在Delegate的方法中

public override nint GetRowsInComponent(UIPickerView pickerView, nint component)
{
    return DisplayMembers.Length;
}

public override string GetTitle(UIPickerView pickerView, nint row, nint component)
{
    if (component == 0)
        return DisplayMembers[row];
    else
        return row.ToString();
}

public override void Selected(UIPickerView pickerView, nint row, nint component)
{
  //...
  var valueMember=ValueMembers[row].ToString();
  // do something you want about valueMember

}

用于 UIPickerView 的 Xamarin ValueMember？

Xamarin ValueMember for UIPickerView?

c#

xamarin.forms

combobox

xamarin.ios

uipickerview